<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>小例子</title>
</head>
<body>
	<ul id='uls'>
		<li>生活</li>
		<li>军事</li>
		<li>汽车</li>
		<li>女人</li>
		<li>娱乐</li>
		<li>体育</li>
	</ul>

	<script type="text/javascript" src='jquery-1.8.3.min.js'></script>
	<script type="text/javascript">

	setInterval(function(){

		$('#uls li').last().hide().prependTo('#uls').slideDown(1000);

	},2000)

	</script>
</body>
</html>